yeah,but I think it would also depend on how it is writen.
Here is one of the major issues I have with many people who talk about kids cartoons being more "mature" nowadays and talking about certain issues openly; They don't. We all hear sjws and others talk about representation and how it matters, but the truth is no kids show is really "devoted" to actually dive into a certain subject (being it racism, homosexuality, issues related to violence and abuse) and show different aspects of it so that an audience can also come to its own conclusion regarding it.
And I think there are many reasons for it, with the following being the most prevalent:
1. No one is talented enough to talk about it.
Sorry, but I do not want to have someone who works on Steven Universe or Teen Titans Go sit down with me and talk to me about drug abuse or gender transgression when it is obvious they themselves don't even know what the heck they talk about.
2. The time devoted to talking about such a subject would also be time taken away from properly telling an engaging story, so that there can be soapboxing. Now yes, it is possible to tell a story with themes and subjects without it being just preachy, particularly when you have time to work it out and tell the story in an organic fashion wiht plot progression. but kids shows don't necessary have that luxury because at the end of the day, a kid wants to be entertained, not lectured.
3. Kids won't probably quite grasp all of it the others want to talk about them. Sure, as an adult we don't have much trouble looking at a story and recognize themes, tropes and discuss them. But that is mostly because we have consumed the media and have been taught in some way about those things. We have been educated and made experiences in life that form our opinions. Children didn't have that luxury for the most part yet, because they are still developing.